MIDA-456 Five days of living together with my cheeky playhood friend, a tsundere. - Pure White Ayei

I have a childhood friend who is younger than me. Our parents are close, so I've been asked to take care of my childhood friend, Ayana, for five days while both of our parents go on a trip. Despite being cold towards her, she gets into my bed because she's scared to sleep alone, and she bathes with me in her school swimsuit because she's scared and embarrassed to be alone. Ayana is competitive and cheeky, but she's hard to hate, and I'm constantly at her mercy! She acts tough, but she also does naughty things...